
The aliens are called the 'Boov' and have come to Earth because stronger, meaner aliens, known as the 'Takers', the 'Gorg', or the 'Nimrog' had taken over their planet. Gratuity suspects that they were the ones who took her mother. Then, while Tip is driving to Florida, she ends up in a corner store, inhabited by an alien who has taken the Earth name, 'J. Lo'. Tip decides to travel with him, and they go an amazing journey to Arizona (because the Boov found out that they really like to wear oranges), to save the world from the Gorg, passing quite a few immature boys on the way.
I really liked how this book is about how you shouldn't judge anything by its cover, how things that seem bad may not be so bad in the grand scheme of things and how it can always be worse. Also, never take cats for granted.